In hledger register output, remove running-total column and invert amount optionally (for € commodity)

hledger-register-remove-sum.sh

#!/bin/bash
# Remove running sum and optionally invert amounts.
# Call with -i as first arg to invert amount!
# All other args are passed to hledger register.

set -o errexit -o pipefail -o nounset

removeSum() {
    sed -r -e 's/ +[^ ]+ €$//'
}

invertAmount() {
    awk '
/ -[0-9,.]+ €$/ {
    print gensub(/(.*) -([0-9,.]+ €$)/, "\\1  \\2", 1)
    next
};
/  [0-9,.]+ €$/ {
    print gensub(/(.*)  ([0-9,.]+ €$)/, "\\1 -\\2", 1)
    next
};
1 # otherwise print'
}

main() {
    if [[ $1 == -i ]]; then
        shift
       	hledger register "$@" | removeSum | invertAmount
    else
        hledger register "$@" | removeSum
    fi
}

main "$@"